Robot Cleaner Dust Box Air Discharge for Automatic Maintenance

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Solution Overview

Problem

Robot cleaners face performance degradation due to dust accumulation, which affects their cleaning efficiency and requires manual intervention for maintenance, leading to inefficiencies and increased operational costs.

Innovation Solution

A cleaning system comprising a robot cleaner with a dust box and a maintenance station that uses air circulation and a brush unit with rotating rollers to effectively discharge dust, and a dust sensing unit to automate the dust removal process, ensuring continuous cleaning performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual dust removal is used, then device complexity is reduced, but productivity decreases due to frequent manual intervention

Engineering Contradiction:
Improvecleaning efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The dust box is equipped with an automatic dust discharge system that operates autonomously without manual intervention. The brush unit rotates to discharge dust automatically, and the air circulation system creates airflow to facilitate dust removal, enabling the system to maintain itself during operation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The air circulation system pre-establishes airflow paths and the brush unit is pre-positioned to facilitate dust discharge before dust accumulation becomes problematic. The system proactively manages dust rather than reactively responding to full dust box conditions.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If dust accumulates in the dust box, then device complexity remains low, but cleaning performance degrades

Engineering Contradiction:
Improvecleaning performanceVSAvoidmaintenance system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The automatic dust discharge system continuously maintains cleaning performance by self-managing dust removal. The brush unit and air circulation work together to prevent dust accumulation that would degrade performance, eliminating the need for external maintenance intervention.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The dust discharge system operates continuously or periodically to maintain consistent cleaning performance throughout operation. The air circulation and brush rotation ensure uninterrupted dust removal capability, preventing performance degradation over time.

Inventive Principle:
Principle #20Continuity of useful action

3Productivity

If a simple dust box is used, then device complexity is low, but dust discharge efficiency is poor

Engineering Contradiction:
Improvedust discharge efficiencyVSAvoiddust box structure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The air circulation system uses pneumatic principles to create airflow that facilitates dust discharge. Air is circulated through the dust box to lift and move dust particles toward the discharge opening, enhancing the mechanical action of the brush unit.

Inventive Principle:
Principle #29Pneumatics and hydraulics

Solution Approach 2:

The brush unit features variable rotation speed capability, allowing it to adapt its rotational dynamics to different dust discharge conditions. The rotation speed can be adjusted to optimize dust discharge efficiency for different types and amounts of dust accumulation.

Inventive Principle:
Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system maintains the robot cleaner's performance by automatically discharging dust, reducing manual intervention, and enhancing cleaning efficiency through automated dust management, thereby minimizing operational costs and maintaining cleanliness.

Implementation Method 1

a light emitting unit to transmit a signal to an interior of the dust box and a light receiving sensor to sense the signal transmitted by the light emitting unit

Methodology Applied
Scientific EffectLight transmission: Light

Implementation Method 2

the dust swept into the dust box is suspended in air introduced into the dust box through the opening of the body

Methodology Applied
Scientific EffectAir suspension: Suspension

Implementation Method 3

The air may be introduced into the dust body through a side region of the opening of the body, and may then be outwardly discharged through a central region of the opening of the body

Methodology Applied
Scientific EffectAir flow: Convection

Implementation Method 4

The maintenance station may further include a pump unit, a suction duct provided at a suction side of the pump unit, and a discharge duct provided at a discharge side of the pump unit

Methodology Applied
Scientific EffectSuction: Suction

Data Source

PatentUS8756751B2Robot cleaner, maintenance station, and cleaning system having the same
Publication Date: 2014.06.24 SAMSUNG ELECTRONICS CO LTD
  • US8756751B2 patent drawing
  • US8756751B2 patent drawing
  • US8756751B2 patent drawing

AI summary

In a cleaning system, dust stored in a dust box is suspended in air introduced into the dust box through a first opening formed through a robot cleaner, and is then discharged to a second opening formed through a maintenance station through the first opening of the robot cleaner.